These “walking sharks” can lay eggs without spending extra energy, rewriting what scientists thought they knew about reproduction.

Biologists like to say that reproduction is the ultimate investment, a costly gamble that shapes everything from lifespan to ...

Epaulette sharks can reproduce without any measurable increase in energy use, stunning researchers who expected egg-laying to ...

Quite an advantage in today’s world.

In the beginning, no one really understood how babies were made. Thinkers puzzled for millennia about how life arose from one generation to the next. But not until the 17th century did scientists ...

A new study shows there is a high cost of parenthood, quantifying the 10% “longevity tax” on reproduction. Consequently, mammals that have fewer or no offspring tend to live longer. But why does ...

Advances in science and technology, coupled with modern medicine, has impacted the way in which we look at life. Reproduction is not an exception. It is no secret that the most prolific innovator on ...

New research shows that epaulette sharks, often called “walking sharks,” can produce eggs without increasing their overall energy use.